Lettering pen



Mar. 3, 1925. 1,528,142-

E. BOURQUIN LETTERING PEN Filed Dec. 31, 1924 Fig.7; Fg. 8.

181. m2. m3 111141115. Fig.5.

s z 2 i 1 i 1 E3 1 Ia I 1 1s I INVENTOR. Edgar Bourqu in.

A TTORNE Y 5 Patented Mar. 3, .1925. 4 UNITED STATES PATENT OFFICE.

, EDGAR BOUBQUIN, or wn'rnm, mnssacnosm' rs.

' m'r'rmzme run.

Application filed December 81, 1924. Serial No. 759,186.

-To all whom it may concern:

Be it known that I, EDGAR BOURQUIN, a

' citizen of the United States, and resident of Waltham, county ofMiddlesex, State of Massachusetts, have invented an Improvement inLettering Pens,

lowing description, in connection with the accompanying drawing, is aspecification,

like characters-on like parts.

This invention relates to lettering or rulthe drawing representing ingpens and it has for one of its objects to I ing member 3 which is formedwit .vide an improved lettering Fig..10 is a side a strip of sheetrovide a novel pen of this type whichcan be used in the ordinarystandard pen holder.

Another object of the invention is to propen which is constructed sothat the ink will always "flow freely and there will be no tendency forit to clog.

Other objects of the invention are toim-.

prove lettering pens in various ways all as will be more fullyhereinafter set forth.

In order to give an understanding of the invention I have illustrated inthe drawings a selected embodiment thereof which will now' be describedafter which the novel features will be pointed out in the appendedclaims.

In the drawings:

Figs. '1 to 8 are sectional views of lettering pens embodying myinvention;

Fig. 9 is a section on the line 9-9, Fig. 10; view of a-lettering penembodyin my invention showing it carried by the ordinary standard penholder.

The pen signed as a lettering, drawing or ruling pen and. will be founduseful by draftsmen, architects, engineers, etcain connection with theirwork.

The pen has a tubular body provided with an. ink-receiving reservoir anda tubular nozzle through which the ink is delivered.

Referring to Fig. 10 the pen is indicate generally at 1, it having atubular body which terminates at its lower end in the ndzzle 2. The penis supported b a clamptwo jaws 4: that embrace the tubular body of thepen, said jaws being shown as formed by bending in Fig. 9. 4

The portion 6 of this holder s received between the arms 7 of the forkedportion of a shank; member 8, the latter having the parti cylindricalportion 9 that hassubstanof which the fol-- 'pen to be swung intodifferent herein illustrated is specially de- P metal into the U shapeshown 'this type of shape as the stem or shank of the clamping member,said screw having a thumb nut 12 screw-threaded therwn.

This screw 11 performs three different functions. It acts as' a clampingscrew for clamping the arms 4 and 5 of the clamping member tightly aboutthe pen, it also acts as a pivotal support between the clamping memberand the shank so as to permit the angular positions, and it acts furtheras a clamping screw for cl'ampm adjusted posltion.

the clamping member in its Lettering pens embodying this inventionusually come in sets, each 'set having therein pens adapted to drawlines of different widths. The construction herein provided has thefurther advantage that the pens are readily interchangeable forbyloosening the clamping nut 12 a pen can be readily removed from theclamping jaws and another pen inserted in its place.

The ens may be made in various ways. InFig. 1 I have shown a simple formof en which comprises simply a cylindrical body 13 having theink-receiving reservoir 14 therein, the lower end ofi the body beingtapered to form the nozzle 2 which 'has the ink duct 3 extendingtherethrough.

The pen shown in Fig. 2 differs from that shown in Fig. 1 in theconstruction of the nozzle. In Fig. 2 the nozzle 15 of the pen is d madein a separate piece which has a sort of funnel shape and is secured ormade fast to the body in any suitable way as by soldering. This form isspecially applicable for a pen adapted for fine lettering and which hasa very small duct 3. a

The pen shown in Fig. 3 has a cylindrical body portion 13 and inkreservoir 14 and the nozzle 16 thereof isprovided witha slit 17 In Fig.5a similar construction is shownexcept that the slit is very nearlyclosed up, psn being specially applicable for some kin of work. 4

In Fig. 6 the nozzle 18 is flared outwardly at its lower end as shown at19 and it is also provided with a slit 17. This type of pen is speciallyapplicable for making wide lines.

] that crates automatically to keep the pen' In Figs. '7 and 8 I haveillustrated a form of pen which-employs an agitator or clearer fromecoming clogged and to ensure an even flow of ink. In this embodimentthe body of the pen is shaped to resent the portion of larger diameterand the intermediate portion 21 of smaller diameter between the portion20 and the nozzle 22.

Situated within the pen is a cleanin device which is provided with agrooved ody portion 23 that is located within and guided yqotheportion-21 of the pen and which is a extends down through the nozzle.The

*sup orted by-the paper and is free for a slig t vertical movement. The'movement oint is of such a length that when cleaning or grooved body 23rests on the bottom of the portion 21 of the en the point of the cleanerwill roject'slig tly through the end of the nozzlii. Enlarged portion 20of the body, together with the .ortion 21, provides reservoir ofrelatively large capacity. 1

The cleaning device is provided with a stem 25-by which it may bemanipulated manually whenever it. is'desirable to clean the pen.

When this penis used the tip of the nozzle is placed against the paperand the engagement" of the-paper with the end of the cleaning in 24 willforce the cleaning device upwar ly and separate it slightly from theseat 26 on which it normally rests. During the writing operation,therefore,- the cleaner is of the cleaner due to placing the tip againstthe paper or removing .it from the paper during the latter operationresults in pre.r

- it in a free owing condition.

venting the; en from elogging and keeping In Fig.8 1 have iliustrateddiiferent embodiment of my invention which is specially applicablefor apen having a very wide-mouthed nozzle. In this construction the pen hasa cylindrical body'27 and the end of the no isflared widely as shown at28. The cleaner in, this embodiment-is fo'i'med with an enlarged portion29 that normally seats a ains't' the seats 30 formedby the taper 0ft 9nozzle. The cleaner m this. instance .is hollow and the lower. end

- 31 is in the-form of a tube which has such.

dimensions that when the enlarged portion 29 rests a inst the seat 30the end of the cleaner w' 7 project slilgslgtly below the noz- 216. Thecleaner is a rovided with a stem 25 by'which it may 1 provided with acleaning pin24 that manually'ma jnipulated. l l

The device shown in Fig. 8 operates in the same way as. that shown in'Fig. 7 so far as keeping the penclean is concerned.

It will thus be seen that my invention provides an interchangeablelettering pen which is adapted to be mounted in the ordidelivery nozzle,of a clamping member in which the pen is removably clamped, and a shanksupporting the clamping member and constructed to be inserted in anordinary standard penholden 2. A lettering pen such as described in'claim 1 in which the clamping memberis 1. In a lettering pen," thecombination with a pen havingla tubular body and a.

pivoted to the shank sothat the pen can be adjusted into differentangular positions relative to the pen holder.

3.. In a lettering pen, the combination with a tubular pen member, of aU-shaped clamping member having clamping jaws embracing said pen member,a supporting shank having a2 forked portion to receive the clampingmember, said shank having a curved portion adapted to fit thepen-receivin groove of an ordinary standard pen ho der. V

4. In a lettering en, the combination with a tubular pen memfienof aU-shaped clamping member havin clamping jaws embracing said pen mem er,a supporting shank havin a forked portion to .reeeive the clampmgmember, said shank having a curved portion adapted toffit thepen-receivmg groove of ordinary standard penholder, and a combinedpivotal and .clamping's'crew extendingthrough the clamping member andthe forked portion'of the stem and adjustably clamping them together.

5, In a'lettering pen, the combination with a tubular body having an inkresei'voir and a nozzle, of a cleaning device in the reservoir, saidcleaning'device having a pin portion extending through the nozzle andnormally-projecting slightly below the latter whereby device will-be raiwhen tlzdpen is used the cleanin slightly by contact wit the paper.' i

' 1 In testimony iwhereof, .I have signed name to thisf'specification. I

' YEDGARZBOURQUINT

